CN203509093U - Thin-walled workpiece machining clamp - Google Patents
Thin-walled workpiece machining clamp Download PDFInfo
- Publication number
- CN203509093U CN203509093U CN201320525489.5U CN201320525489U CN203509093U CN 203509093 U CN203509093 U CN 203509093U CN 201320525489 U CN201320525489 U CN 201320525489U CN 203509093 U CN203509093 U CN 203509093U
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- sleeve
- mandrel
- elastic expansion
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Abstract
The utility model discloses a thin-walled workpiece machining clamp, and belongs to the technical field of thin-walled workpiece machining clamps. The clamp comprises a mandrel, a first nut, three or more positioning screws and a first elastic expansion sleeve, the mandrel is sleeved with the first elastic expansion sleeve and the first nut in sequence, the first elastic expansion sleeve is a tubular cylinder, a taper hole with the diameter being large in exterior and small in interior is formed in the end of the first elastic expansion sleeve, three or more long holes are evenly formed in the middle of the cylinder in the axial direction, axial opening through grooves are arranged between the long holes and the end face of the taper hole, and the taper hole is matched with the circular conical surface at the right end of the mandrel. By means of matching between the elastic expansion sleeve and the mandrel, the elastic expansion sleeve is axially positioned through the positioning screws, then the elastic expansion sleeve is fastened through the nut, a thin-walled workpiece to be machined is fixed by means of the self-centering characteristic of the elastic expansion sleeve, the problem that the thin-walled workpiece is prone to deformation in the welding, finish turning, accurate grinding and other machining processes is solved, product quality is ensured, production efficiency can be improved, and product deformation can be effectively controlled and reduced.
Description
Technical field
The utility model relates to thin-wall part clamping tool for machine work technical field.
Background technology
Tube kind part is a kind of part conventional in machinery, the inside and outside surface of revolution of having relatively high expectations for axiality in main surface, and part wall thickness is thinner.But the processing of thin-wall part is more thorny, reason is thin-wall part poor rigidity, weak strength; thin-walled tube kind part is when fine finishining; if with shaping excircle orientation processing endoporus; due to part wall thickness, poor rigidity; will produce the problem of machining deformation, and deflection number can not get effective control always, element precision is difficult for guaranteeing.In actual production process, exist and to be difficult for clamping, the easy phenomenons such as cutter, size be unstable of shaking, processing difficulties, fault rate is high.
Affect a lot of because have of thin-wall part machining accuracy, but be summed up, mainly contain three aspects: (1) stress deformation because workpiece wall is thin, easily produces distortion, thereby affects dimensional accuracy and the form accuracy of workpiece under the effect of clamping force; (2) temperature distortion, because workpiece is thinner, heat in metal cutting can cause workpiece thermal deformation, makes workpiece size be difficult to control; (3) vibration deformation, under the effect of cutting force (particularly radial cutting force), makes workpiece deformation thereby be easy to produce vibration, affects dimensional accuracy, shape, positional precision and the surface roughness of workpiece.The generation of these distortion is conventionally all irregular, cannot be controlled and each workpiece to add the distortion producing man-hour all not necessarily identical, thereby greatly affected the machining accuracy of thin-wall part.
If carry out grinding on general-purpose grinder, be through 3 procedures such as interior mill, plain grinding and outer mill, and because design of part is thin and clamping inconvenience, and the factor such as the easy modification of part, be difficult to reach the requirements such as precision, roughness, technical conditions.Conventional is method for fine finishing at present, by high precision digital control lathe, boring machine, grinding machine, coordinates special fixture could meet specification requirement.Jig Design one is pressed from both sides one often, and while processing endoporus, with the installation way of four paws clamping, centre frame supporting, all very high to the requirement of equipment, fixture, production efficiency is also in urgent need to be improved.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, easy to use, processing clamp for thin-wall parts that positioning precision is high, can effectively control and reduce the processing clamp for thin-wall parts of the deflection of product, not only guarantee product quality but also can enhance productivity.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of processing clamp for thin-wall parts, comprise mandrel, nut I, three above dog screw and elastic expansion-sleeve I, described elastic expansion-sleeve I and nut I are sleeved on mandrel successively, described nut I coordinates with mandrel thread, described elastic expansion-sleeve I is tubular cylinder, end is the outer little taper hole of imperial palace of diameter, cylinder middle part is laid with more than 3 elongated holes along axis direction, between elongated hole and taper hole end face, be provided with axially open groove, described taper hole coordinates with the taper seat of mandrel right-hand member, described nut I one end is provided with platform circle, three above shrinkage pools of the upper radial equipartition of platform circle.
Preferably, between described mandrel and elastic expansion-sleeve I, be provided with key, on described mandrel, be equipped with corresponding keyway in elastic expansion-sleeve I left end through hole, between elastic expansion-sleeve I and nut I, be also provided with more than three dog screws, at elastic expansion-sleeve I left end, be provided with the blind hole matching with nut I platform circle, on the blind pore wall of elastic expansion-sleeve I, be provided with the screwed hole corresponding with nut I upper concave hole, described dog screw is arranged in the shrinkage pool of nut I through the screwed hole on elastic expansion-sleeve I.
Preferably, also comprise tapered sleeve I, described tapered sleeve I is the tubular body that one end is provided with large outer little male cone (strobilus masculinus) in diameter, between described tapered sleeve I and nut I, be also provided with three above dog screws, the large end of described tapered sleeve I is provided with the blind hole matching with nut I platform circle, on tapered sleeve I blind pore wall, be provided with the screwed hole corresponding with nut I upper concave hole, described dog screw is arranged in the shrinkage pool of nut I through the screwed hole on tapered sleeve I, described elastic expansion-sleeve I is the tubular cylinder that two ends are provided with taper hole, between the staggered and both ends of the surface of described elongated hole, be provided with axially open groove, the two ends taper hole of described elastic expansion-sleeve I respectively with the taper seat of mandrel right-hand member, the male cone (strobilus masculinus) of tapered sleeve I coordinates.
Preferably, described mandrel right-hand member is provided with nylon washer I, and between described nylon washer I and mandrel, for bolt is fixedly connected with, described mandrel left end is the cone with Morse's taper.
Preferably, described mandrel two ends are d-axis, and two ends are arranged with centre bore.
Preferably, described mandrel left end is provided with centre bore, right-hand member is provided with First circle and second circle that two diameters successively decrease, second circle located fixedly welding tubular transition axis, described transition axis is fixedly welded on and lengthens on mandrel, the described lengthening mandrel other end is provided with the centre bore identical with mandrel, described mandrel, on transition axis and lengthening mandrel, be provided with successively nut I, tapered sleeve I, elastic expansion-sleeve I, nylon washer II, tapered sleeve II, elastic expansion-sleeve II, spacer shell and nut II, described elastic expansion-sleeve II left end is straight hole, right-hand member is the outer little taper hole of imperial palace of diameter, described spacer shell is the tubular body that two ends are provided with large outer little male cone (strobilus masculinus) in diameter, tapered sleeve II, elastic expansion-sleeve II, spacer shell is more than one, nut II coordinates with lengthening mandrel thread.
Preferably, described mandrel and lengthening mandrel are equipped with through hole.
Preferably, described elastic expansion-sleeve I and elastic expansion-sleeve II middle part are equipped with the inner chamber that diameter is greater than through hole.
Adopt the beneficial effect that technique scheme produces to be: by coordinating of elastic expansion-sleeve and mandrel, with dog screw, elastic expansion-sleeve is carried out to axial location, recycling nut carries out fastening, utilize the self-centering feature of elastic expansion-sleeve, thin-wall part to be processed is fixed, not by means of external force de-clamping thin-wall part to be processed, reduced the deflection of outside chucking power to thin-wall part, solved thin-wall part in welding, finish turning, yielding problem in the machining process such as fine grinding, guaranteed Wall-Thickness Difference requirement (being not more than 0.25mm), can make the outer circles of cartridge bring up to 0.05mm by 0.1mm.The utlity model has simple in structure, processing and feature easy to use, workpiece pack into smoothly and positioning precision higher, not only guaranteed product quality but also can enhance productivity, can effectively control and reduce the feature of deformation of products amount.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3;
Fig. 4 is the structural representation of Fig. 1 Elastic ringfeder I;
Fig. 5 is the structural representation of Fig. 2, Fig. 3 Elastic ringfeder I;
In figure: 01-thin-wall part, 1-mandrel, 2-nut I, 3-dog screw, 41-key, 42-tapered sleeve I, 5-elastic expansion-sleeve I, 6-nylon washer I, 7-screw, 8-First circle, second circle of 9-, 10-transition axis, 11-lengthens mandrel, 12-nut II, 13-tapered sleeve II, 14-elastic expansion-sleeve II, 15-spacer shell, 16-nylon washer II.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
For easy to operate, elastic expansion-sleeve is also carried out to loss of weight processing, described elastic expansion-sleeve I5 and elastic expansion-sleeve II 14 middle parts are equipped with the inner chamber that diameter is greater than through hole.In addition, when thin-wall part thinner for wall thickness and that length is larger designs fixture, in order to make tapered sleeve I42 and elastic expansion-sleeve I5 fixing more firm at mandrel 1, can be provided with alignment pin in mandrel 1 and tapered sleeve I42 cooperation place, correspondingly at tapered sleeve I42 endoporus, process keyway, on mandrel 1, process pin-and-hole, in mandrel 1 and elastic expansion-sleeve I5 cooperation place, also can process pin-and-hole simultaneously, with alignment pin, through the elongated hole on elastic expansion-sleeve I5, insert in pin-and-hole elastic expansion-sleeve I5 is fixed.
Elastic expansion-sleeve of the present utility model can form several dimension serieses according to actual needs, also can select different elastic expansion-sleeve fixtures according to the thickness of thin-wall part to be processed, length, when wall thickness dimension is greater than 2mm, can adopt the shorter short processing clamp for thin-wall parts in two ends to locate processing; And wall thickness is while being less than 2mm, for guaranteeing the part stiff problem in process, can adopt the processing clamp for thin-wall parts of lengthening to locate processing.The excircle dimension of elastic expansion-sleeve is generally little than the endoporus processing least material size of part to be processed; For guaranteeing centering precision, all cooperation conical surface angles will be below 30 °, and will guarantee that conical surface contact-making surface is greater than 60%; For the high thin-wall part location of required precision, also can utilize dog screw to prevent tapered sleeve rotation, only move and unclamp or tensioner vertically.
Adopt the utility model in the fine finishining process of thin-wall part, can make the positioning precision of Wall-Thickness Difference significantly improve (≤0.25mm), outer circles is brought up to 0.05mm by 0.1mm; In addition, adopt this kind of processing clamp for thin-wall parts in welding process, welding heat can conduct in time, has reduced heat accumulation, corresponding the reducing of postwelding workpiece size distortion; Simultaneously also improved weldment position stability, avoided the welding bead weld defect such as wander off, weld seam first-time qualification rate has had large increase, and operating efficiency has improved approximately 40%, has met the requirement on machining accuracy of thin-wall part.The utlity model has simple in structure, processing and feature easy to use, workpiece pack into smoothly and positioning precision higher, can effectively control and reduce the deflection of product, not only guaranteed product quality but also can enhance productivity.
Claims (8)
1. a processing clamp for thin-wall parts, comprise mandrel (1), nut I(2) and elastic expansion-sleeve I(5), described elastic expansion-sleeve I(5) and nut I(2) be sleeved on successively on mandrel (1), described nut I(2) with mandrel (1) threaded engagement, it is characterized in that: be described elastic expansion-sleeve I(5) tubular cylinder, cylinder middle part is laid with more than 3 elongated holes along axis direction, between elongated hole and taper hole end face, be provided with axially open groove, end is the outer little taper hole of imperial palace of diameter, described taper hole respectively with the cone cone match of mandrel (1) right-hand member, described nut I(2) one end is provided with platform circle, three above shrinkage pools of the upper radial equipartition of platform circle.
2. processing clamp for thin-wall parts according to claim 1, it is characterized in that: described mandrel (1) and elastic expansion-sleeve I(5) between be provided with key (41), on described mandrel (1), elastic expansion-sleeve I(5) in left end through hole, be equipped with corresponding keyway, at elastic expansion-sleeve I(5) and nut I(2) between be also provided with more than three dog screws (3), at elastic expansion-sleeve I(5) left end is provided with and nut I(2) blind hole that matches of platform circle, at elastic expansion-sleeve I(5) blind pore wall on be provided with and nut I(2) screwed hole that upper concave hole is corresponding, described dog screw (3) is through elastic expansion-sleeve I(5) on screwed hole be arranged on nut I(2) shrinkage pool in.
3. processing clamp for thin-wall parts according to claim 1, it is characterized in that: also comprise tapered sleeve I(42), described tapered sleeve I(42) for one end, be provided with the tubular body of large outer little male cone (strobilus masculinus) in diameter, described tapered sleeve I(42) and nut I(2) between be also provided with three above dog screws (3), described tapered sleeve I(42) large end is provided with and nut I(2) blind hole that matches of platform circle, at tapered sleeve I(42) be provided with and nut I(2 on blind pore wall) screwed hole that upper concave hole is corresponding, described dog screw (3) is through tapered sleeve I(42) on screwed hole be arranged on nut I(2) shrinkage pool in, described elastic expansion-sleeve I(5) for two ends, be provided with the tubular cylinder of taper hole, between the staggered and both ends of the surface of described elongated hole, be provided with axially open groove, described elastic expansion-sleeve I(5) two ends taper hole respectively with coniform circle of mandrel (1) right-hand member, tapered sleeve I(42) male cone (strobilus masculinus) coordinates.
4. processing clamp for thin-wall parts according to claim 1 and 2, it is characterized in that: described mandrel (1) right-hand member is provided with nylon washer I(6), described nylon washer I(6) with mandrel (1) between for bolt is fixedly connected with, described mandrel (1) left end is the cone with Morse's taper.
5. according to the processing clamp for thin-wall parts described in claim 1,2 or 3, it is characterized in that: described mandrel (1) two ends are d-axis, and two ends are arranged with centre bore.
6. processing clamp for thin-wall parts according to claim 5, it is characterized in that: described mandrel (1) left end is provided with centre bore, right-hand member is provided with First circle (8) and second circle (9) that two diameters successively decrease, second circle (9) located fixedly welding tubular transition axis (10), described transition axis (10) is fixedly welded on and lengthens on mandrel (11), described lengthening mandrel (11) other end is provided with the centre bore identical with mandrel (1), described mandrel (1), on transition axis (10) and lengthening mandrel (11), be provided with successively nut I(2), tapered sleeve I(42), elastic expansion-sleeve I(5), nylon washer II (16), tapered sleeve II (13), elastic expansion-sleeve II (14), spacer shell (15) and nut II (12), described elastic expansion-sleeve II (14) left end is straight hole, right-hand member is the outer little taper hole of imperial palace of diameter, described spacer shell (15) is provided with in diameter the tubular body of large outer little male cone (strobilus masculinus) for two ends, tapered sleeve II (13), elastic expansion-sleeve II (14), spacer shell (15) is more than one, nut II (12) and lengthening mandrel (11) threaded engagement.
7. processing clamp for thin-wall parts according to claim 6, is characterized in that: described mandrel (1) and lengthening mandrel (11) are equipped with through hole.
8. processing clamp for thin-wall parts according to claim 6, is characterized in that: described elastic expansion-sleeve I(5) and elastic expansion-sleeve II (14) middle part be equipped with the inner chamber that diameter is greater than through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525489.5U CN203509093U (en) | 2013-08-27 | 2013-08-27 | Thin-walled workpiece machining clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525489.5U CN203509093U (en) | 2013-08-27 | 2013-08-27 | Thin-walled workpiece machining clamp |
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| Publication Number | Publication Date |
|---|---|
| CN203509093U true CN203509093U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320525489.5U Expired - Fee Related CN203509093U (en) | 2013-08-27 | 2013-08-27 | Thin-walled workpiece machining clamp |
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| CN (1) | CN203509093U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588890A (en) * | 2014-12-31 | 2015-05-06 | 瑞安市激光应用工程示范中心有限公司 | Clamp for surfacing outer surface of thin-wall annular workpiece |
| CN106064314A (en) * | 2016-08-18 | 2016-11-02 | 福建龙溪轴承(集团)股份有限公司 | A kind of processing tool cut off for thin-walled external member |
| CN106270600A (en) * | 2016-08-26 | 2017-01-04 | 中航动力股份有限公司 | One rises core type location mandril |
| CN107234464A (en) * | 2017-07-31 | 2017-10-10 | 江南工业集团有限公司 | Shape locating and machining clamping device in a kind of thin_wall cylinder part is complicated |
| CN108608352A (en) * | 2018-07-09 | 2018-10-02 | 森泰英格（成都）数控刀具股份有限公司 | A kind of inner propping collet |
| CN109128944A (en) * | 2018-07-13 | 2019-01-04 | 武汉船用机械有限责任公司 | A kind of processing tool and processing method of spherical surface bearing shell |
| CN109530743A (en) * | 2018-12-16 | 2019-03-29 | 广东星联精密机械有限公司 | A kind of support sleeve processing tool |
| CN109794726A (en) * | 2019-01-18 | 2019-05-24 | 杨胜 | A kind of stainless steel tube bonding machine |
| CN111702199A (en) * | 2020-07-30 | 2020-09-25 | 北京小螺智能科技有限公司 | Turning fixture for machining large-diameter thin-wall steel lining |
| CN112338601A (en) * | 2020-10-29 | 2021-02-09 | 陕西长羽航空装备有限公司 | Cylindrical thin-wall part machining and forming tool and method |
| CN114074192A (en) * | 2020-08-18 | 2022-02-22 | 航天科工惯性技术有限公司 | Radial expansion device and method for thin-wall cylindrical structural part |
-
2013
- 2013-08-27 CN CN201320525489.5U patent/CN203509093U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588890B (en) * | 2014-12-31 | 2019-02-05 | 浙江久恒光电科技有限公司 | A kind of fixture for circular thin-wall outer surface of workpiece built-up welding |
| CN104588890A (en) * | 2014-12-31 | 2015-05-06 | 瑞安市激光应用工程示范中心有限公司 | Clamp for surfacing outer surface of thin-wall annular workpiece |
| CN106064314A (en) * | 2016-08-18 | 2016-11-02 | 福建龙溪轴承(集团)股份有限公司 | A kind of processing tool cut off for thin-walled external member |
| CN106064314B (en) * | 2016-08-18 | 2018-06-29 | 福建龙溪轴承(集团)股份有限公司 | A kind of processing tool for the cut-out of thin-walled external member |
| CN106270600A (en) * | 2016-08-26 | 2017-01-04 | 中航动力股份有限公司 | One rises core type location mandril |
| CN107234464A (en) * | 2017-07-31 | 2017-10-10 | 江南工业集团有限公司 | Shape locating and machining clamping device in a kind of thin_wall cylinder part is complicated |
| CN108608352A (en) * | 2018-07-09 | 2018-10-02 | 森泰英格（成都）数控刀具股份有限公司 | A kind of inner propping collet |
| CN109128944A (en) * | 2018-07-13 | 2019-01-04 | 武汉船用机械有限责任公司 | A kind of processing tool and processing method of spherical surface bearing shell |
| CN109530743A (en) * | 2018-12-16 | 2019-03-29 | 广东星联精密机械有限公司 | A kind of support sleeve processing tool |
| CN109794726A (en) * | 2019-01-18 | 2019-05-24 | 杨胜 | A kind of stainless steel tube bonding machine |
| CN109794726B (en) * | 2019-01-18 | 2021-12-03 | 中沃(泰州)激光科技有限公司 | Stainless steel pipe welding machine |
| CN111702199A (en) * | 2020-07-30 | 2020-09-25 | 北京小螺智能科技有限公司 | Turning fixture for machining large-diameter thin-wall steel lining |
| CN114074192A (en) * | 2020-08-18 | 2022-02-22 | 航天科工惯性技术有限公司 | Radial expansion device and method for thin-wall cylindrical structural part |
| CN112338601A (en) * | 2020-10-29 | 2021-02-09 | 陕西长羽航空装备有限公司 | Cylindrical thin-wall part machining and forming tool and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20190827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |